Analysis
- max time kernel
151s - max time network
139s - platform
windows10-2004_x64 - resource
win10v2004-20220812-en - resource tags
- submitted
05/10/2022, 12:31
General
- Target file.exe
- Size 280KB
- Sample221005-pp2qeaece5
- SHA256 3b0a3f77c6c6acfb24d97ec169eb0f976914af7371060ad1231c21a3c2e8b4b2
Malware Config
Extracted
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djvu
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http://winnlinne.com/lancer/get.php
-
extension
.adww
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offline_id
z8lhl4oForVEc7gy9Ra8rSqjYMl3xiFRuIW4not1
-
payload_url
http://rgyui.top/dl/build2.exe
http://winnlinne.com/files/1/build3.exe
-
ransomnote
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Extracted
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vidar
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54.9
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517
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https://t.me/larsenup
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https://ioc.exchange/@zebra54
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profile_id
517
Signatures
- Detected Djvu ransomware 10 IoCs
- Detects Smokeloader packer 3 IoCs
- Djvu Ransomware
Ransomware which is a variant of the STOP family.
- SmokeLoader
Modular backdoor trojan in use since 2014.
- Vidar
Vidar is an infostealer based on Arkei stealer.
- Downloads MZ/PE file
- Executes dropped EXE 16 IoCs
- Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 11 IoCs
- Modifies file permissions 1 TTPs 1 IoCs
- Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
- Accesses 2FA software files, possible credential harvesting 2 TTPs
- Accesses Microsoft Outlook profiles 1 TTPs 3 IoCs
- Accesses cryptocurrency files/wallets, possible credential harvesting 2 TTPs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Legitimate hosting services abused for malware hosting/C2 1 TTPs
- Looks up external IP address via web service 3 IoCs
Uses a legitimate IP lookup service to find the infected system's external IP.
- Suspicious use of SetThreadContext 3 IoCs
- Detects Pyinstaller 3 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
- Program crash 9 IoCs
- Checks SCSI registry key(s) 3 TTPs 6 IoCs
SCSI information is often read in order to detect sandboxing environments.
- Checks processor information in registry 2 TTPs 2 IoCs
Processor information is often read in order to detect sandboxing environments.
- Creates scheduled task(s) 1 TTPs 2 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
- Suspicious behavior: EnumeratesProcesses 64 IoCs
- Suspicious behavior: GetForegroundWindowSpam 1 IoCs
- Suspicious behavior: MapViewOfSection 24 IoCs
- Suspicious use of AdjustPrivilegeToken 64 IoCs
- Suspicious use of WriteProcessMemory 64 IoCs
- outlook_office_path 1 IoCs
- outlook_win_path 1 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\file.exe"C:\Users\Admin\AppData\Local\Temp\file.exe"1⤵
- Checks SCSI registry key(s)
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
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C:\Users\Admin\AppData\Local\Temp\4277.exeC:\Users\Admin\AppData\Local\Temp\4277.exe1⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 5482⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 5642⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 5642⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 6762⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 7602⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 8602⤵
- Program crash
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C:\Windows\SysWOW64\Wbem\wmic.exewmic os get Caption2⤵
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 13042⤵
- Program crash
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 12922⤵
- Program crash
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C:\Windows\SysWOW64\cmd.execmd /C "wmic path win32_VideoController get name"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic path win32_VideoController get name3⤵
- Suspicious use of AdjustPrivilegeToken
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-
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C:\Windows\SysWOW64\cmd.execmd /C "wmic cpu get name"2⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic cpu get name3⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -u -p 3824 -s 1402⤵
- Program crash
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C:\Users\Admin\AppData\Local\Temp\446C.exeC:\Users\Admin\AppData\Local\Temp\446C.exe1⤵
- Executes dropped EXE
- Checks SCSI registry key(s)
- Suspicious behavior: MapViewOfSection
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C:\Windows\system32\regsvr32.exeregsvr32 /s C:\Users\Admin\AppData\Local\Temp\47B9.dll1⤵
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\regsvr32.exe/s C:\Users\Admin\AppData\Local\Temp\47B9.dll2⤵
- Loads dropped DLL
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C:\Users\Admin\AppData\Local\Temp\497F.exeC:\Users\Admin\AppData\Local\Temp\497F.exe1⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\497F.exeC:\Users\Admin\AppData\Local\Temp\497F.exe2⤵
- Executes dropped EXE
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\icacls.exeicacls "C:\Users\Admin\AppData\Local\f678b5d9-d854-47e3-9b80-daf3f25913cb" /deny *S-1-1-0:(OI)(CI)(DE,DC)3⤵
- Modifies file permissions
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C:\Users\Admin\AppData\Local\Temp\497F.exe"C:\Users\Admin\AppData\Local\Temp\497F.exe" --Admin IsNotAutoStart IsNotTask3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\497F.exe"C:\Users\Admin\AppData\Local\Temp\497F.exe" --Admin IsNotAutoStart IsNotTask4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\8cff4141-69d5-4607-b6ec-31774bf65579\build2.exe"C:\Users\Admin\AppData\Local\8cff4141-69d5-4607-b6ec-31774bf65579\build2.exe"5⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
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C:\Users\Admin\AppData\Local\8cff4141-69d5-4607-b6ec-31774bf65579\build2.exe"C:\Users\Admin\AppData\Local\8cff4141-69d5-4607-b6ec-31774bf65579\build2.exe"6⤵
- Executes dropped EXE
- Loads dropped DLL
- Checks processor information in registry
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C:\Users\Admin\AppData\Local\8cff4141-69d5-4607-b6ec-31774bf65579\build3.exe"C:\Users\Admin\AppData\Local\8cff4141-69d5-4607-b6ec-31774bf65579\build3.exe"5⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"6⤵
- Creates scheduled task(s)
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
- Accesses Microsoft Outlook profiles
- outlook_office_path
- outlook_win_path
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 3824 -ip 38241⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3824 -ip 38241⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 536 -p 3824 -ip 38241⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 532 -p 3824 -ip 38241⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3824 -ip 38241⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 528 -p 3824 -ip 38241⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 360 -p 3824 -ip 38241⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 520 -p 3824 -ip 38241⤵
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C:\Windows\SysWOW64\WerFault.exeC:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 3824 -ip 38241⤵
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C:\Users\Admin\AppData\Local\Temp\D0A2.exeC:\Users\Admin\AppData\Local\Temp\D0A2.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\D518.exeC:\Users\Admin\AppData\Local\Temp\D518.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\DD46.exeC:\Users\Admin\AppData\Local\Temp\DD46.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\E825.exeC:\Users\Admin\AppData\Local\Temp\E825.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\Wbem\wmic.exewmic os get Caption2⤵
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C:\Windows\SysWOW64\cmd.execmd /C "wmic path win32_VideoController get name"2⤵
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic path win32_VideoController get name3⤵
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C:\Windows\SysWOW64\cmd.execmd /C "wmic cpu get name"2⤵
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C:\Windows\SysWOW64\Wbem\WMIC.exewmic cpu get name3⤵
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C:\Users\Admin\AppData\Local\Temp\F341.exeC:\Users\Admin\AppData\Local\Temp\F341.exe1⤵
- Executes dropped EXE
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C:\Users\Admin\AppData\Local\Temp\F341.exeC:\Users\Admin\AppData\Local\Temp\F341.exe2⤵
- Executes dropped EXE
- Loads dropped DLL
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c copy explorer.exe "%APPDATA%\Microsoft\Windows\Start Menu\Programs\Startup"3⤵
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C:\Windows\system32\cmd.exeC:\Windows\system32\cmd.exe /c "ver"3⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Windows\explorer.exeC:\Windows\explorer.exe1⤵
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C:\Windows\SysWOW64\explorer.exeC:\Windows\SysWOW64\explorer.exe1⤵
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C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exeC:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe1⤵
- Executes dropped EXE
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C:\Windows\SysWOW64\schtasks.exe/C /create /F /sc minute /mo 1 /tn "Azure-Update-Task" /tr "C:\Users\Admin\AppData\Roaming\Microsoft\Network\mstsca.exe"2⤵
- Creates scheduled task(s)
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Network
MITRE ATT&CK Enterprise v6
Replay Monitor
Loading Replay Monitor...
Downloads
mozglue.dll
nss3.dll
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
07CEF2F654E3ED6050FFC9B6EB844250_3431D4C539FB2CFCB781821E9902850D
B2FAF7692FD9FFBD64EDE317E42334BA_D7393C8F62BDE4D4CB606228BC7A711E
build2.exe
build2.exe
build2.exe
build3.exe
build3.exe
4277.exe
4277.exe
446C.exe
446C.exe
47B9.dll
47B9.dll
497F.exe
497F.exe
497F.exe
497F.exe
497F.exe
D0A2.exe
D0A2.exe
D518.exe
D518.exe
DD46.exe
DD46.exe
E825.exe
E825.exe
F341.exe
F341.exe
F341.exe
VCRUNTIME140.dll
VCRUNTIME140.dll
_bz2.pyd
_bz2.pyd
_ctypes.pyd
_ctypes.pyd
_lzma.pyd
_lzma.pyd
_socket.pyd
_socket.pyd
base_library.zip
libffi-7.dll
libffi-7.dll
python310.dll
python310.dll
select.pyd
select.pyd
497F.exe
mstsca.exe
mstsca.exe
memory/488-166-0x0000000000400000-0x000000000044B000-memory.dmp
memory/488-169-0x0000000000400000-0x000000000044B000-memory.dmp
memory/488-163-0x0000000000550000-0x0000000000559000-memory.dmp
memory/488-161-0x00000000006EB000-0x00000000006FC000-memory.dmp
memory/928-162-0x0000000000794000-0x0000000000825000-memory.dmp
memory/928-165-0x00000000022F0000-0x000000000240B000-memory.dmp
memory/1056-178-0x0000000002F20000-0x0000000002FCB000-memory.dmp
memory/1056-154-0x0000000002A90000-0x0000000002BF4000-memory.dmp
memory/1056-173-0x0000000002E60000-0x0000000002F20000-memory.dmp
memory/1056-155-0x0000000002D30000-0x0000000002E54000-memory.dmp
memory/1056-177-0x0000000002F20000-0x0000000002FCB000-memory.dmp
memory/1056-180-0x0000000002D30000-0x0000000002E54000-memory.dmp
memory/1860-304-0x0000000000710000-0x0000000000719000-memory.dmp
memory/1860-276-0x0000000000700000-0x000000000070F000-memory.dmp
memory/1860-275-0x0000000000710000-0x0000000000719000-memory.dmp
memory/2008-151-0x0000000000680000-0x000000000068C000-memory.dmp
memory/2108-305-0x0000000001080000-0x0000000001085000-memory.dmp
memory/2108-283-0x0000000001080000-0x0000000001085000-memory.dmp
memory/2108-284-0x0000000001070000-0x0000000001079000-memory.dmp
memory/2304-257-0x00000000003E0000-0x00000000003E7000-memory.dmp
memory/2304-259-0x00000000003D0000-0x00000000003DB000-memory.dmp
memory/2304-303-0x00000000003E0000-0x00000000003E7000-memory.dmp
memory/2432-289-0x0000000000CE0000-0x0000000000D02000-memory.dmp
memory/2432-307-0x0000000000CE0000-0x0000000000D02000-memory.dmp
memory/2432-290-0x0000000000CB0000-0x0000000000CD7000-memory.dmp
memory/2616-306-0x0000000000E90000-0x0000000000E96000-memory.dmp
memory/2616-286-0x0000000000E90000-0x0000000000E96000-memory.dmp
memory/2616-287-0x0000000000E80000-0x0000000000E8C000-memory.dmp
memory/2960-298-0x0000000000B20000-0x0000000000B27000-memory.dmp
memory/2960-299-0x0000000000B10000-0x0000000000B1D000-memory.dmp
memory/2960-310-0x0000000000B20000-0x0000000000B27000-memory.dmp
memory/3092-209-0x0000000000400000-0x000000000045E000-memory.dmp
memory/3092-206-0x0000000000400000-0x000000000045E000-memory.dmp
memory/3092-243-0x0000000000400000-0x000000000045E000-memory.dmp
memory/3092-212-0x0000000000400000-0x000000000045E000-memory.dmp
memory/3092-213-0x0000000061E00000-0x0000000061EF3000-memory.dmp
memory/3284-190-0x0000000002162000-0x00000000021F3000-memory.dmp
memory/3316-293-0x0000000000D20000-0x0000000000D29000-memory.dmp
memory/3316-308-0x0000000000D30000-0x0000000000D35000-memory.dmp
memory/3316-292-0x0000000000D30000-0x0000000000D35000-memory.dmp
memory/3820-309-0x0000000000500000-0x0000000000506000-memory.dmp
memory/3820-296-0x00000000004F0000-0x00000000004FB000-memory.dmp
memory/3820-295-0x0000000000500000-0x0000000000506000-memory.dmp
memory/3824-172-0x0000000000400000-0x00000000008BC000-memory.dmp
memory/3824-197-0x0000000000400000-0x00000000008BC000-memory.dmp
memory/3824-171-0x0000000003070000-0x00000000034B7000-memory.dmp
memory/4308-153-0x0000000000CF0000-0x0000000000D5B000-memory.dmp
memory/4308-156-0x0000000000CF0000-0x0000000000D5B000-memory.dmp
memory/4308-152-0x0000000000D60000-0x0000000000DD5000-memory.dmp
memory/4336-311-0x00000000001B0000-0x00000000001B8000-memory.dmp
memory/4336-302-0x00000000001A0000-0x00000000001AB000-memory.dmp
memory/4336-301-0x00000000001B0000-0x00000000001B8000-memory.dmp
memory/4368-210-0x00000000007CD000-0x00000000007F8000-memory.dmp
memory/4368-211-0x0000000000720000-0x000000000076A000-memory.dmp
memory/4404-164-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4404-158-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4404-160-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4404-176-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4404-167-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4600-236-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4600-196-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4600-189-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4600-191-0x0000000000400000-0x0000000000537000-memory.dmp
memory/4912-133-0x0000000002040000-0x0000000002049000-memory.dmp
memory/4912-135-0x0000000000400000-0x000000000044B000-memory.dmp
memory/4912-132-0x00000000005AC000-0x00000000005BC000-memory.dmp
memory/4912-134-0x0000000000400000-0x000000000044B000-memory.dmp